The ornamental design for a shaver, as shown and described.
FIG. 1 is a front view of the design of the present invention for a shaver;
FIG. 2 is a rear view of the shaver;
FIG. 3 is a top view of the shaver;
FIG. 4 is a bottom view of the shaver;
FIG. 5 is a right side view of the shaver, wherein a left side view is a mirror impression of the right side view and otherwise is identical to the right side view;
FIG. 6 is a perspective view of the shaver,
FIG. 7 is an exploded perspective view of the shaver; and,
FIG. 8 is an exemplary side view of the shaver illustrating use of the claimed shaver.
The broken lines are shown for illustrative purposes only and form no part of the claimed design.